WO1986006563A1 - Disjoncteur de protection contre des courants de defaut pour courants de defaut alternatifs et continus sans accumulation d'energie - Google Patents

Disjoncteur de protection contre des courants de defaut pour courants de defaut alternatifs et continus sans accumulation d'energie Download PDF

Info

Publication number
WO1986006563A1
WO1986006563A1 PCT/DE1986/000162 DE8600162W WO8606563A1 WO 1986006563 A1 WO1986006563 A1 WO 1986006563A1 DE 8600162 W DE8600162 W DE 8600162W WO 8606563 A1 WO8606563 A1 WO 8606563A1
Authority
WO
WIPO (PCT)
Prior art keywords
current
fault
residual current
release
electronic circuit
Prior art date
Application number
PCT/DE1986/000162
Other languages
German (de)
English (en)
Inventor
Gottfried Biegelmeier
Original Assignee
Brown, Boveri & Cie Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brown, Boveri & Cie Aktiengesellschaft filed Critical Brown, Boveri & Cie Aktiengesellschaft
Publication of WO1986006563A1 publication Critical patent/WO1986006563A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/332—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means responsive to dc component in the fault current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/338—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers also responsive to wiring error, e.g. loss of neutral, break

Definitions

  • the invention relates to a residual current circuit breaker according to the preamble of claim 1.
  • a modern concept of a residual current circuit breaker must also master the triggering of residual currents which can occur in the form of pulsating or smoothed direct currents. It has always been known that FI circuit breakers can only be effective in the case of alternating fault currents. If the fault current has direct current components, the tripping sensitivity of the circuit breakers is adversely affected. As more and more electronic components are used in household appliances, the DC problem must also be solved. It has long been believed that in the circuits used in practice in electrical household appliances, in the event of a ground fault, the flowing fault current can still occur in the form of a pulsating direct current. For fault currents such as those e.g.
  • Circuits independent of the mains voltage cannot detect fault currents in the form of smoothed direct currents due to the principle of tripping. In this case, it is necessary to use electronic circuits that naturally depend on the mains voltage. gen and can process residual DC currents in all forms via summation current transformers. For example, US Pat. No. 3,768,011 and published patent application DE-OS 27 30 874 describe such circuits. The question thus arises which dangers can arise from the use of the network as an auxiliary voltage supply for triggering fault protection switches.
  • the switch can fail if the corresponding outer conductor or the neutral conductor fails (for example when a fuse of the outer conductor responds or if the neutral conductor breaks) and fault voltages caused by ground faults of the two other outer conductors can no longer be recognized. But even if all three outer conductors of a three-phase network are used for the auxiliary voltage supply, the neutral conductor break still remains. An attempt was therefore made to remedy this by triggering the Fl switch when the neutral conductor breaks (DE-OS 28 25 881). If an additional connection, for example the protective conductor, is used for this, then this has the disadvantage that the installation is complicated and the earth potential is brought into the switch.
  • the short-circuit current 1 ⁇ flows through the outer conductor and neutral conductor and the voltage drop in the neutral conductor caused by it becomes effective as a fault voltage in the ratio of the system earth R ⁇ to the operational earth Rß.
  • the fault current 1 ⁇ flowing as a result of the fault voltage cannot trigger the switch due to the absence of the auxiliary voltage U ⁇ .
  • the switch must also trip in the event of a failure of the outer conductor and / or the neutral conductor as well as in the event of short-circuit and earth faults in the event of fault AC currents. In these cases, it does not need to remain functional in the case of DC faults because, firstly, the simultaneous occurrence of a network fault and a DC fault current represents a negligible safety risk, and secondly, in the event of short circuits, the fault voltage as a result of the voltage division between the phase conductor and neutral conductor in networks up to 240 V against Earth remains below 120 V and therefore the conventional contact voltage limit, which is 120 V for direct current, is not exceeded.
  • circuits which are independent of the mains voltage cannot detect smoothed direct currents; constructions which are dependent on the mains voltage fail again when the outer conductor and / or the neutral conductor fail and in the event of short-circuits occurring at the same time with ground faults.
  • the technical requirements regarding protection zes with indirect contact thus exclude both mains-independent circuits and mains-voltage-dependent circuits.
  • the object of the invention is to provide residual current circuit breakers of the type mentioned at the outset, which can be used without great effort both with AC residual currents and with DC residual currents or AC residual currents with DC residual current components. This object is achieved according to the invention by the characterizing features of claim 1.
  • the residual current release is actuated with alternating or direct current with the energy drawn from the network via the electronic circuit and the release coil.
  • the secondary winding of the summation current transformer is connected directly to the residual current release and is used for triggering in the event of residual AC currents or pulsating residual DC currents.
  • Fig. 3 shows a residual current circuit breaker according to the invention
  • Fig. 4 shows a further embodiment of a fault current circuit breaker according to the invention.
  • FIG. 3 shows a residual current circuit breaker with a summation current transformer 10 whose primary windings are connected through the the phase current conductor L ⁇ , L 2 and L3 and the neutral conductor are formed.
  • the secondary winding of the summation current transformer 10 is connected to a first tripping coil 12 of a fault current release, designated in its entirety by the reference number 25, and triggers the triggering when fault alternating currents or pulsating fault direct currents occur.
  • An electronic circuit 13 which contains an oscillator, is connected in parallel with the secondary winding 11.
  • the electronic circuit 13 is supplied with mains voltage from the phase conductor L-
  • the electronic circuit 13 is connected to a second tripping coil 16 of the residual current release 25.
  • This electronics circuit 13 is used to detect fault DC currents or fault AC currents with DC components in such a way that the total current transformer 10 is premagnetized via the oscillator in the electronics circuit; in the event of a fault direct current or a fault alternating current with direct current components, the operating point of the total current transformer is shifted, which is detected by the electronic circuit 13 and leads to the output of a signal to the trigger coil 16, whereby the trigger 25 triggers a switching lock 17 which triggers Contacts 18 in the phase conductors Lj to L3 and the neutral conductor N opens.
  • the trigger 25 triggers a switching lock 17 which triggers Contacts 18 in the phase conductors Lj to L3 and the neutral conductor N opens.
  • DC components is generated in the summation current transformer 10 by the oscillator of the electronic circuit 13 in the secondary winding 11 of the summation current converter 10 Voltage so changed by asymmetry or displacement of the working point, that via the Elektronik ⁇ circuit 13 'the verbun ⁇ parallel with the secondary winding 11 with the trip coil 16 of the residual current device 25 to, these obligations with the aid of the mains power (via the Lei ⁇ 14 and 15 ) excited via the electronic circuit 13 and thus triggers the residual current circuit breaker.
  • Parallel to the input of the electronic circuit 13 and thus also parallel to the secondary winding 11, a diode circuit consisting of two antiparallel connected diodes 19 is provided as voltage-dependent resistors, which serve to achieve the surge current resistance and the overvoltage resistance.
  • the residual current circuit breaker according to FIG. 4 has only one summation current transformer 10, the secondary winding 11 of which is connected directly to the first trip coil 12. The fault current circuit breaker is thus triggered when fault alternating currents or pulsating fault direct currents occur.
  • a tertiary winding 20 is wound on the summation current transformer 10, which is connected to the diode circuit 19 in parallel and the outputs of which are connected to the electronic circuit 13. The output of the electronic circuit 13 is again connected to the trip coil 16 of the residual current release 25.
  • the residual current release 25 has two release coils 12 and 16, as a result of which the two release circuits are electrically isolated from one another.
  • the diode circuit 19 also serves to achieve the surge current resistance and the overvoltage strength and it is connected in parallel to the oscillator circuit in the output circuit of the tertiary winding 20. It can be seen that an actuating button 26 or switching knob 26 is arranged on the switching lock 17, with which the fault current circuit breaker can be switched on or off again.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

Un disjoncteur de protection contre des courants de défaut, comprenant un transformateur de courant totalisateur (10), à l'enroulement secondaire (11) duquel est reliée la bobine d'excitation (26) à la fois directement et par l'intermédiaire d'un circuit électronique (13), de sorte que les courants de défaut alternatifs et continus aussi bien que les courants de défaut alternatifs ayant des composantes de courant continu peuvent être détectés et utilisés pour déconnecter un circuit de courant secteur.
PCT/DE1986/000162 1985-05-02 1986-04-12 Disjoncteur de protection contre des courants de defaut pour courants de defaut alternatifs et continus sans accumulation d'energie WO1986006563A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT130185 1985-05-02
ATA1301/85 1985-05-02

Publications (1)

Publication Number Publication Date
WO1986006563A1 true WO1986006563A1 (fr) 1986-11-06

Family

ID=3510928

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1986/000162 WO1986006563A1 (fr) 1985-05-02 1986-04-12 Disjoncteur de protection contre des courants de defaut pour courants de defaut alternatifs et continus sans accumulation d'energie

Country Status (6)

Country Link
EP (1) EP0220215A1 (fr)
AU (1) AU5774586A (fr)
ES (1) ES8707384A1 (fr)
GB (1) GB2177560A (fr)
GR (1) GR860990B (fr)
WO (1) WO1986006563A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0349880A1 (fr) * 1988-07-07 1990-01-10 Siemens Aktiengesellschaft Dispositif de protection contre les courants de défaut
EP0522187A1 (fr) * 1991-07-08 1993-01-13 Siemens Aktiengesellschaft Disjoncteur de défaut à la terre

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1701423B1 (fr) * 2005-03-03 2012-02-08 Airbus Operations GmbH Arrangement pour améliorer la résistance aux courts-circuits d'un appareil en utilisant un shunt
DE102013105313A1 (de) * 2013-05-23 2014-11-27 Eaton Industries (Austria) Gmbh Fehlerstromschutzschalter (RC-Glied)
DE102013105314A1 (de) * 2013-05-23 2014-11-27 Eaton Industries (Austria) Gmbh Fehlerstromschutzschalter
GB2527892B (en) * 2014-07-04 2021-09-08 Siemens Ag Residual current protection apparatus with detection which is purely dependent on the power supply system voltage.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1808770A1 (de) * 1968-11-14 1970-06-11 Siemens Ag Fehlerstromschutzschalter
FR2246097A1 (fr) * 1973-09-28 1975-04-25 Siemens Ag
DE2555302A1 (de) * 1975-12-09 1977-06-23 Bbc Brown Boveri & Cie Fehlerstromschutzschaltung
FR2416580A1 (fr) * 1978-02-02 1979-08-31 Felten & Guilleaume Carlswerk Branchement de protection contre les courants de fuite pour courant continu et/ou alternatif
FR2430680A1 (fr) * 1978-07-05 1980-02-01 Saparel Detecteur de courant de defaut continu ou alternatif

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1808770A1 (de) * 1968-11-14 1970-06-11 Siemens Ag Fehlerstromschutzschalter
FR2246097A1 (fr) * 1973-09-28 1975-04-25 Siemens Ag
DE2555302A1 (de) * 1975-12-09 1977-06-23 Bbc Brown Boveri & Cie Fehlerstromschutzschaltung
FR2416580A1 (fr) * 1978-02-02 1979-08-31 Felten & Guilleaume Carlswerk Branchement de protection contre les courants de fuite pour courant continu et/ou alternatif
FR2430680A1 (fr) * 1978-07-05 1980-02-01 Saparel Detecteur de courant de defaut continu ou alternatif

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0349880A1 (fr) * 1988-07-07 1990-01-10 Siemens Aktiengesellschaft Dispositif de protection contre les courants de défaut
EP0522187A1 (fr) * 1991-07-08 1993-01-13 Siemens Aktiengesellschaft Disjoncteur de défaut à la terre

Also Published As

Publication number Publication date
GR860990B (en) 1986-07-21
ES8707384A1 (es) 1987-07-16
AU5774586A (en) 1986-11-18
EP0220215A1 (fr) 1987-05-06
ES554413A0 (es) 1987-07-16
GB2177560A (en) 1987-01-21
GB8610625D0 (en) 1986-06-04

Similar Documents

Publication Publication Date Title
EP0218648B1 (fr) Disjoncteur pour courants de defaut
DE19735412A1 (de) Fehlerstrom-Schutzeinrichtung
DE102018128121A1 (de) AC/DC-Umwandlungs-Anordnung
WO1986006563A1 (fr) Disjoncteur de protection contre des courants de defaut pour courants de defaut alternatifs et continus sans accumulation d'energie
DE3431581C2 (fr)
DE102011011984B4 (de) Fehlerstrom-Schutzeinrichtung mit frequenzabhängiger Schaltung zur Spannungsvervielfachung
DE4040359C2 (de) Einrichtung zum Kurzschlußschutz
DE102019202474A1 (de) Fehlerstromschutzeinheit und Verfahren
EP0524142B1 (fr) Circuit de déclenchement électronique pour un disjoncteur de fuite à la terre
EP1011183B1 (fr) Disposition de circuit de protection de courant de défaut à la terre
DE102020216414A1 (de) Fehlerstromschutzschalter und Verfahren
DE3738493A1 (de) Fehlerortungseinrichtung
DE19946098C2 (de) Fehlerstromschutzeinrichtung
EP1074079B1 (fr) Disjoncteur
DE2216377C3 (fr)
DE2413399C2 (fr)
DE2613972A1 (de) Fehlerstromschutzschalter
AT406208B (de) Fi-schutzschalter mit überspannungsauslösung
EP2523304A1 (fr) Appareil de chargement de batterie et son procédé
EP4367699A1 (fr) Disjoncteur et procédé
EP4377983A1 (fr) Disjoncteur et procédé
DE1538634C (de) Erdschlußrelais
DE1538634B2 (de) Erdschlussrelais
DE4343560A1 (de) Fehlerstromschutzschalter
DE102018221059A1 (de) Relaisüberwachung

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR LU NL SE